Dumping-car



(No Model.)

I. B. ROB'BINS.'

4 DUMPING GAR.'

No. 255,888'|` Patented Apr. 4,1882.

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NTTED STATES PATENT here,V

ISAIAH B. ROBBINS, OF S'IOOKTON, CALIFORNIA, ASSIGNOR OF ONEHALF TO JOSEPH S. MORGAN, OF BROOKLYN, NEW YORK.

DUMPING-CAR.

i SPECIFICATION forming part of Letters Patent No. 255,888, dated April 4, 1882.

i 4 Application filed May 25,1881. (No model.)

To all whom it may concern Be it known that I, ISAIAII B. ROBBlNs, a citizen of the United States, residing at Stockton, in the county of San Joaquin and State 5 of Oalitornia, have invented certain new and useful Improvements in Dumping-Cars and Methods of Unloading Same by Means ot' Oompressed Air; and I do hereby declare the following to be ai'ull, clear, and exact descripro tion of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters` or figures ot' reference marked thereon, whicl form a part of this speciiication. My invention relates to certain improvementsin dumping-cars such as are used in constructing and ballasting railroads, excavating and lilling, for transporting coal, gravel, and zo ores, and in the application thereto of power bymeans of .compressed atmospheric air, so that in the immediate and direct process ot' unloading or dumping manual labor may be wholly dispensed-with. I attain the above very desirable objects by the mechanism illustrated in the accompanying drawings, in which- Figure lis an end view of a car platform and frame, showing air-cylinders and air-pipe o attachment, the platform-sections being in the position of discharging. View of car platform and frame, showing their connection with air-cylinders and air-pipe. Fig. 3 is a "detached side view of one side of the carframe, showing one of the adjustable side boards attached to its standards. No part of a runnin g-gear is shown in the above views, as I base no claim thereupon, my improvements being solely in the car-body and appli- 4o cation thereto, for unloading, ofpower by means of compressed atmospheric air. i

Similar letters refer to similar par ts throughout the several views.

I construct the car-body as follows: The platform is made in two longitudinal sections, A A. The frame is composed of sides G C and ends B B, and is strengthened by transverse timbers F, located near each ot the ends B., These timbers F have an opening at their cenf- 5o ters and serve as points of connection for aircylinders, as will be hereinafter shown. Each Fig,2 is a bottom platform -section A, at its outside edge, is hinged to its respective frame side l), so as to admit ot' each section being'- independentlyV tilted for the purpose ot'` discharging its load, 55 or both simultaneously.

Standards D are attached, as shown, onetoV each end of the frame sides O, and are provided with slots. Side boards, E, are loosely bolted into the slots of standards D, so as to `6o permit of the free escape of the load when platform-sections A are tilted.

Power to unload is applied by means of compressed atmospheric air in the following man-- ner: Air-cylinders G are provided each witha piston having an oval head, a., secured, as shown, beneath and at the central opening of each of the transverse timbers F to permit the necessary up and down movements ot' the heads ay through said openings. The two cyl- 7o inders G are connected beneath by an air-pipe, H, which has in each end a stop-coclr, c. VThe 4 air-pipe Il of each car is connected to that of the immediate front or rear car by any suita` ble coupling. The stop-cocks c can be shut oli' 75 vor turned on, as required, so as to shut off or permit the flow ot' air and vthus permit unloading lof one single car ot' a train or of any number of cars simultaneously, the line of airpipes H being of co'urse connected to and sup'- plied with compressed air from any desired style of air-compressing apparatus.

When 'the pressure is applied for the purpose ot' unloading the car or cars the pistons with oval heads a, responding to said pressure, lift the innerlongitudinal edges ofthe platform, sections A, which, heilig hinged, as shown, to frame sides O, are readily tilted and relieved of -their loads, the side boards, E, yielding to the pressure ot' the load and permitting its free 9o discharge.

Although it is not absolutely essential to use 'the side boards, E E, yet I claimt there is a" decided advantage in their use-wm., that the load may be placed nearer the outer edges ot' 95 the platform and away from its direct center/ thus requiring less labor in loading and less lifting-pressure of air to unload. I also prefer that the inner longitudinal edges of the sections A A be provided with stationary side boards to properly divide the load and prevent its falling upon the piston-heads, Svc.

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Having thus fully described my invention, what I claimrand desire to secure by Letters Patent, is-

1. In combination with the platform-sections A A, hinged to the frame sides C C, the cylinders G G, the piston-rods of which are provided with oval heads a, attached beneath and at the circular openings of the transverse timbers F F ofthe car-frame and connected t0- gether by an air-pipe, H, having a stop-cock, c, in each end, the said air-pipe H being oonnected to that of the other ears, andthe entire series beingr connected with and supplied with compressed air from any style of air-compressing apparatus, all'substantially as herein described and set forth. v

2. In a dumping-car,theplattbrm constructed in two longitudinal sections, each section hinged to itsicspective frame side, in combination with air-c) linders attached beneath the said platform-sections to transverse timbers of the car-frame, the pistons of said cylinders having oval heads and lmoving upward to tilt the platform-sections in response to pressure of compressed air forced through pipe connecting the cylinders, said pipe having stop-cocks in each cnd adapted to shut off or admit the supply ot' air so as to unload one car only or several simultaneously7 as herein shown and described.

3. In a dumping-car, the combination of a platform made inr two center-opening longitudinal sections and tilting right and left, the air-cylinders, and devices tilting the platformsections hy pressure of compressed' atmospheric air, substantially as described.

4.'1n a dumping-car, a platform composed oflongitudinal seetionsA, hinged to the frame sides G, said frame sides C having bolted thereto standards D, provided with slots carrying side boards, E', which latter are loosely bolted in the slots ofstandards D, so as to permit of the free escape of the load when the platformsections'A are tilted for that purpose, all as herein shown and described.

5. In a dumping-car, as a means of unloading the same, the combination of a platform made in two longitudinal sections which are hinged each to its respective side of the carframe, air-cylinders attached. beneath transverse timbers of car-frame, provided with pistons having oval heads working upward through openings in said transverse timbers, and an air-pipe connecting the air-cylinders together and having a stop-cock in each end, which air-pipe, being connected to any suitable compressed-air apparatus, permits by a proper adjustmentof the stop-cocks a How of coinpressed air into the cylinders, the pistons of which, responding to the pressure, permit the oval heads to raise the platform-sections and discharge their loads to right and left, substantially as herein described.

6. In combination with a railroad or similar car, a platform made in two longitudinal sections, A, hinged each to its respective sides O of the car-frame, and having applied. thereto pow-er by means of compressed atmospheric air supplied from any air-compressingapparatus through air-pipe H to air-cylinders G, attached to and beneath transverse timbersFof car-frame, as and for the purposes specified.

7. The air-cylinders Gr G, attached beneath the transverse timbers F F, arranged in relation to platform-sections A A and air-pipe H, the latter being provided with stopcocks c c and connected with any air-compressing apparatus, so that air may be forced through said pipe H and air-cylinders C C to raise platformsections AA by its pressure, all substantially as and for the purposes herein set forth.

In testimony whereof I have affixed my signature in presence of two witnesses.

ISAIAH B. ROBBINS.

Witnesses:

J AMES BRoWN, ELIHU B. SroWE. 

